Search found 64 matches

by Rogelio Bazan 1D
Sat Mar 16, 2019 9:59 pm
Forum: Administrative Questions and Class Announcements
Topic: Sig Figs
Replies: 9
Views: 317

Re: Sig Figs

If you look at Dr. Lavelle's midterm solutions it says minus 1pt for not including sig figs. So it is graded but you will not lose a lot of points for it. Just try to keep it in mind. Hope this helps.
by Rogelio Bazan 1D
Sat Mar 16, 2019 9:46 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalysts
Replies: 9
Views: 275

Re: Catalysts

A catalyst brings down the activation energy, effectively increasing the speed at which the reaction occurs. Graphically this would bring down the very top peak on the graph as the activation energy is lowered to make the reaction occur. Hope this helps.
by Rogelio Bazan 1D
Sat Mar 16, 2019 9:43 pm
Forum: First Order Reactions
Topic: Integrated Rate Law graphs
Replies: 1
Views: 172

Re: Integrated Rate Law graphs

To my understanding, The rate law is a differential equation, meaning that it describes the change in concentration of the reactant (s) per change in time. The rate law can then be integrated to obtain an integrated rate equation that links concentrations of reactants or products with time directly....
by Rogelio Bazan 1D
Sat Mar 16, 2019 9:39 pm
Forum: Zero Order Reactions
Topic: overall rate
Replies: 4
Views: 207

Re: overall rate

To my understanding and a brief google search, we do not include zero-order reactions when writing the overall rate because zero order does not affect the overall rate. Hope this helps. If I am wrong someone please correct me.
by Rogelio Bazan 1D
Sat Mar 16, 2019 9:29 pm
Forum: First Order Reactions
Topic: units
Replies: 3
Views: 185

Re: units

Sec^-1 is the units for the first order rate law reactions. Hope this helps.
by Rogelio Bazan 1D
Sat Mar 16, 2019 9:26 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Isometric/Isochoric
Replies: 10
Views: 296

Re: Isometric/Isochoric

Danielle Hoekstra 1C wrote:Is isochoic another way to say a closed system? Are they interchangeable?


Please, someone, correct me if I am wrong, but I think that isochoric is the same thing as Isometric. As in a closed system.
by Rogelio Bazan 1D
Sat Mar 16, 2019 9:03 pm
Forum: Balancing Redox Reactions
Topic: Electrochemical series
Replies: 2
Views: 167

Re: Electrochemical series

I do not think we need to know specifics regarding the electrochemical series, but it can be helpful to know what the electronegativity trends along the periodic table. You can look up periodic table trends on google and maybe use that as a source. Hope this helps.
by Rogelio Bazan 1D
Sat Mar 16, 2019 8:53 pm
Forum: Zero Order Reactions
Topic: third order
Replies: 6
Views: 234

Re: third order

Hope this helps, from my understanding Dr. Lavelle only wants us to focus on 1st, 2nd, and Oth order reactions but third order is not a scope of this class.
by Rogelio Bazan 1D
Sat Mar 16, 2019 8:50 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation Energy
Replies: 3
Views: 55

Re: Activation Energy

They are closely related but it is not an inverse relationship. We can say that whenever we have high activation energy that it would correspond to a lower rate.
by Rogelio Bazan 1D
Sat Mar 16, 2019 8:39 pm
Forum: Phase Changes & Related Calculations
Topic: Isothermal
Replies: 9
Views: 293

Re: Isothermal

Isothermal is key information when solving a problem as it is in reference to the temperature if it is not explicitly stated we assume temperature would be constant when doing our calculations, hope this helps.
by Rogelio Bazan 1D
Mon Mar 11, 2019 4:53 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Increasing oxidizing power
Replies: 2
Views: 58

Re: Increasing oxidizing power

To my understanding something that is more likely to become oxidized means that it is more likely to lose an electron. So if the species has a low electronegativity then it will have a higher oxidizing power (it will have a higher likelihood of giving off an electron and becoming oxidized). Hope thi...
by Rogelio Bazan 1D
Mon Mar 11, 2019 4:45 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Increasing reducing power
Replies: 4
Views: 92

Re: Increasing reducing power

Conceptually what I find helpful is looking at periodic trends along the periodic table looking at electronegativity as you go up and to the left toward Florine you electronegativity increases on the periodic table. To define Electronegativity it is the chemical property that describes the ability o...
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:37 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Frequency Factor
Replies: 5
Views: 77

Re: Frequency Factor

Since Dr. Llavelle went over this at the end of the lecture I did not get great notes on it, but what I did get was that 'When they collide, it is Frequency Factor A'. So I assume that Frequency A is in reference to the rate at which the molecules collide. According to another user I found on Chemis...
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:32 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Final Exam
Replies: 23
Views: 282

Re: Final Exam

My guess is that there will probably be an emphasis on Kinetics and possibly Nernst Equation as it was not included in Test 2 but remember to review everything as the final is a cumulative exam. Hope this helps.
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:30 pm
Forum: *Electrophiles
Topic: final
Replies: 3
Views: 378

Re: final

There will probably be an emphasis on kinetics since it was the most recent unit and we spent the longest amount of time on it. Just study everything though. I agree with Meachelle that there will probably be an emphasis on Kinetics and possibly Nernst Equation as it was not included in Test 2 but ...
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:25 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Rate constant
Replies: 4
Views: 227

Re: Rate constant

In Kinetics and for the scope of this class, the rate constant will never be negative. The Arrhenius equation is always positive (otherwise, the rate constant would be Zero). If the rate constant was zero then this would indicate that the reaction is not occurring at all. Please, someone, correct me...
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:18 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: electrolytic cell
Replies: 1
Views: 39

Re: electrolytic cell

To my understanding, if a species has a greater reduction potential then this refers to its electronegativity. If a species is said to have greater reduction potential then it is more electronegative, as such it is going to be more likely to pull electrons off of another species with lower electrone...
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:09 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Determining the Magnitude of K
Replies: 3
Views: 58

Re: Determining the Magnitude of K

That is my bad, I apologize for not explaining which k I was referring to but in this case, I am referring to lowercase k (rate constant). The picture helps clarifies my confusion, I appreciate it. Just to make sure. As temperature increases, k increases, and when activation energy increases, then k...
by Rogelio Bazan 1D
Mon Mar 11, 2019 3:01 pm
Forum: Zero Order Reactions
Topic: Half-life
Replies: 4
Views: 64

Re: Half-life

Thank you so much, this is really helpful. So just to clarify, according to which order reaction we are dealing with we use the corresponding equation.
For example) zero order; rate = k: t½ = [Ao] / 2k, first order; rate = k[A]: t½ = 0.693 / k, second order; rate = k[A]2: t½ = 1 / k [Ao]
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:57 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Frequency factor A
Replies: 7
Views: 113

Re: Frequency factor A

Since Dr. Llavelle went over this at the end of the lecture I did not get great notes on it, but what I did get was that 'When they collide, it is Frequency Factor A'. So I assume that Frequency A is in reference to the rate at which the molecules collide. Hope this helps.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:52 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius plot
Replies: 4
Views: 66

Re: Arrhenius plot

Reading online, I think it is just for convenience to make the plot appear to be a straight line and allow us to analyze the data with greater ease. Hope this helps.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:49 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Determining the Magnitude of K
Replies: 3
Views: 58

Determining the Magnitude of K

In lector today (3/11) Dr. Llavelle briefly spoke about what determines the magnitude of K, can someone clarify what he meant by this? It was toward the end of the lecture so I wasn't able to write everything down. Thank you.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:46 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: "Bottle Neck" Pre-equilibrium Approach
Replies: 1
Views: 33

"Bottle Neck" Pre-equilibrium Approach

I was confused by what Dr. Llavelle meant by 'bottleneck' when referring to the intermediate step, could someone please explain/clarify? Thank you.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:42 pm
Forum: First Order Reactions
Topic: Half-life Clarification
Replies: 5
Views: 96

Half-life Clarification

To clarify my notes from the lecture, there is a different half-life equation based on which Reaction Order that we are dealing with? For example, zero order has its own half-life equation so on and so forth? Thank you.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:39 pm
Forum: Zero Order Reactions
Topic: Graphs
Replies: 8
Views: 156

Re: Graphs

To my understanding and looking at the textbook first order reactions will have a negative (-) slope, second-order reactions will have a positive (+) slope, and zero order reactions will have a negative (-) slope. This is due to the value of k either being positive or negative which affect the slope...
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:36 pm
Forum: General Rate Laws
Topic: Rate Laws
Replies: 8
Views: 119

Re: Rate Laws

My TA has brought it up in our discussion section and he told us to be familiar with the derivation, but it is unlikely that he will ask on an exam but I still think we should know it as he spent some time in class talking about the derivations. Llavelle did mention why he did that in lecture and it...
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:33 pm
Forum: Zero Order Reactions
Topic: Half-life
Replies: 4
Views: 64

Half-life

As I am going through Kinetics in the textbook I am still having trouble understanding Half-life. If someone can help me clarify the concepts to Half-life and the equation(s) involved it would be of great help. Thank you.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:23 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Equation-Review
Replies: 1
Views: 48

Arrhenius Equation-Review

Can someone please explain to me what Dr. Llavelle meant by the Arrhenius equation? In what situation would we use this equation? Thank you.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:17 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Intermediates
Replies: 8
Views: 121

Re: Intermediates

The rate law is only composed of the reactants that are in the total reaction. Intermediates cannot be in the rate law as they are not found in the total reaction which is why we get rid of them when doing the general rate law. Hope this helps.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:13 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Pre-equilibrium approach
Replies: 1
Views: 30

Re: Pre-equilibrium approach

In today's lector (3/11) Dr. Llavelle went into detail with the pre-equilibrium approach and yes, in my notes I have that k1 is the K for the first step as in k1[NO]^2
still trying to wrap my head around this pre-equilibrium approach. Hope this helps.
by Rogelio Bazan 1D
Mon Mar 11, 2019 2:10 pm
Forum: Ideal Gases
Topic: Ideal gases
Replies: 5
Views: 86

Re: Ideal gases

According to my understanding of how Dr. Llavelle explains incorporating gases into our equations, we always assume ideal behavior unless we are told otherwise but I don't think for our level we need to understand anything other than assuming ideal behavior. Hope this helps.
by Rogelio Bazan 1D
Sun Jan 13, 2019 11:13 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Quadratic Formula in Equilibrium
Replies: 4
Views: 70

Quadratic Formula in Equilibrium

When in a problem are we supposed to use the quadratic formula when solving for equilibrium? I know Dr. Lavelle in lecture showed we are supposed to get the terms in relation to ax^2+bx+c but what I am confused about is what type of problem requires this type of calculation in which we have to apply...
by Rogelio Bazan 1D
Sun Jan 13, 2019 11:09 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Solids and Liquids in Equilibrium [ENDORSED]
Replies: 2
Views: 61

Solids and Liquids in Equilibrium [ENDORSED]

I know that Dr. Lavelle stated that both Solids and Liquids are excluded during equilibrium calculations as there is an excess of both the solids in the liquids so we exclude them during calculations. I am still confused with subjects in the reaction that is in an aqueous state do we exclude these a...
by Rogelio Bazan 1D
Sun Jan 13, 2019 10:57 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Equilibrium in relation to K and Q
Replies: 5
Views: 82

Equilibrium in relation to K and Q

I am reviewing the modules for equilibrium under Dr. Lavelle's website and I was hoping that I could get some help understanding what is the difference when solving for both Q and K while working on an equilibrium equation. I know that to solve for K you put products over reactants. Example) aA+bB⇋c...
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:57 pm
Forum: Ionic & Covalent Bonds
Topic: ionic character
Replies: 11
Views: 1054

Re: ionic character

By large electronegativity difference we are referring to the periodic trends on the periodic table. Electronegativity increases as you move from left to right across a period on the periodic table. So the top right-hand corner on the periodic table where Florine is at will be the most electronegati...
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Dipole Moments
Replies: 1
Views: 170

Re: Dipole Moments

Yes, this is correct, a good example of a dipole moment is the interaction that H20 has with Oxygen being more electronegative. A dipole moment has both a magnitude and a direction which is important to keep in mind. Best, Roger.
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:39 pm
Forum: Student Social/Study Group
Topic: Final
Replies: 11
Views: 980

Re: Final

The final is tomorrow, I really wish everyone nothing but positive vibes just put your best foot forward and try your best. We can do this good luck to everyone!
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:36 pm
Forum: Conjugate Acids & Bases
Topic: My Understanding
Replies: 1
Views: 147

My Understanding

A conjugate acid and conjugate base to my understanding is just the opposite of an acid or a base? Once it goes through an acid-base reaction whats on the opposite side of the reaction is the conjugate acid and conjugate base?
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:24 pm
Forum: Conjugate Acids & Bases
Topic: No Proton Transferred? HW Problem
Replies: 4
Views: 356

Re: No Proton Transferred? HW Problem

I am reading this post and looking at the book, I think that there should be a transfer of protons because it is an acid-base reaction and as such there should be a proton donor and a proton acceptor. Not sure I am also a bit confused by this.

Best, Roger
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:20 pm
Forum: Conjugate Acids & Bases
Topic: HW 12.1
Replies: 5
Views: 274

Re: HW 12.1

Hello, I hope you are well, I think it has to do with the Brønsted-Lowry Definition of what an acid and what a base is that determines which one accepts the H+. Brønsted-Lowry Acid is a proton (hydrogen ion), donor. A Brønsted-Lowry base is a proton (hydrogen ion), acceptor. I hope this helps.
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:15 pm
Forum: Ionic & Covalent Bonds
Topic: Polar and Non-polar Covalent bonds
Replies: 4
Views: 202

Polar and Non-polar Covalent bonds

I know this is an old one but what is the difference between polar and non-polar covalent bonds?
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:13 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Molecular Orbital Diagram
Replies: 4
Views: 343

Re: Molecular Orbital Diagram

Yeah, I think we do need to know how to draw them if you need help I think this video I found on youtube will help I know it helped me.

https://youtu.be/IaVlh3kol9Q

Best, Roger
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:10 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Le Chatelier's Principle [ENDORSED]
Replies: 1
Views: 321

Le Chatelier's Principle [ENDORSED]

Do we need to know Le Chatelier's Principles for solving chemical equilibrium problems? I know that it has to do with the proportions in a chemical equation/solutions as chemical reactions go on. I am not sure if that's even right. Thanks.
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:06 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination Compounds: Ligands [ENDORSED]
Replies: 3
Views: 275

Coordination Compounds: Ligands [ENDORSED]

Do we need to memorize our Neutral LIgands and Anionic Ligands or more so understand the conceptual basis of them? I know this was one of the later topics to be covered but I do recall Dr. Lavelle saying that we needed to understand the biological significance? Thanks.
by Rogelio Bazan 1D
Wed Jun 13, 2018 10:01 pm
Forum: Lewis Structures
Topic: Coulomb's law
Replies: 1
Views: 142

Coulomb's law

Hi, I feel like I might be over stressing. How well do we need to know Coulomb's law I saw it in the book like once and to be completely honest it just confused me but thinking back will I need to know the specifics of Coulomb's law or is it more just an explanation of just how molecules interact wi...
by Rogelio Bazan 1D
Wed Jun 13, 2018 9:56 pm
Forum: Ionic & Covalent Bonds
Topic: ionic character
Replies: 11
Views: 1054

Re: ionic character

The ionic character which is just Ionic Bonding which to my understanding corresponds to periodic trends in which a bond between two molecules in which a large electronegativity difference exists between the two atoms would cause them to be more electronegative. I hope this helps with any confusion.
by Rogelio Bazan 1D
Wed Jun 13, 2018 9:52 pm
Forum: Amphoteric Compounds
Topic: Is BeO amphoteric?
Replies: 2
Views: 420

Re: Is BeO amphoteric?

To my understanding, an amphoteric compound is a molecule or ion that can react both as an acid as well as a base.
Beryllium oxide is amphoteric because it can react with both acidic and basic solutions.
BeO + H2SO4 -------- BeSO4 + H2O; BeO + 2NaOH ------------- Na2BO2 + H2O

Best, Roger
by Rogelio Bazan 1D
Wed Jun 13, 2018 9:46 pm
Forum: *Shrodinger Equation
Topic: Schrodinger Equation
Replies: 2
Views: 216

Re: Schrodinger Equation

Yes, this is correct, I also think but I am not sure that they are inversely proportional. So as the height of the wave increases at position x,y,z then the probability will be much smaller and if the probability of finding the electron increases then the height of the wave is much smaller. Best, Ro...
by Rogelio Bazan 1D
Wed Jun 13, 2018 9:43 pm
Forum: Lewis Structures
Topic: Breaking the Octet Rule
Replies: 3
Views: 144

Breaking the Octet Rule

I know that in some cases for Lewis Structures there are exceptions to the octet rule and some elements take more electrons than fit in an octet, I found a problem online which just for review I want to go over. Can someone tell me what the Lewis Structure for PCl3O is?
by Rogelio Bazan 1D
Wed Jun 13, 2018 9:35 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Molecular Orbital Theory [ENDORSED]
Replies: 1
Views: 168

Molecular Orbital Theory [ENDORSED]

The molecular Orbital theory states: it describes the molecular structure in which electrons occupy orbitals that spread throughout a molecule. With this information, we are able to determine that there is what is called an 'anti-bond' so if we are given an anti-bond can we determine the complimenta...
by Rogelio Bazan 1D
Wed Jun 13, 2018 9:30 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VESPER Theory and Bond types
Replies: 3
Views: 221

VESPER Theory and Bond types

Hello, I am a bit confused I am reviewing VESPER and Bond types for the final, I know that there are pi-bonds and sigma bonds. Is there any way to determine the type of bond other than like a single bond is a sigma bond and a double bond being a sigma and a pi bond? I feel like I am still unclear wi...
by Rogelio Bazan 1D
Sun May 13, 2018 10:27 pm
Forum: Dipole Moments
Topic: Dipoles
Replies: 2
Views: 113

Dipoles

I know we haven't exactly gone over dipoles in class I was reading ahead in the textbook and I am a bit curious of how we determine a dipole moment I understand that H2O is an example of a dipole moment as it has something to do with electronegativity? Oxygen is more electronegative than Hydrogen so...
by Rogelio Bazan 1D
Sun May 13, 2018 10:24 pm
Forum: Formal Charge and Oxidation Numbers
Topic: How do I determine Formal Charge?
Replies: 2
Views: 136

How do I determine Formal Charge?

So I understand that the equation for the formal charge is the following: Formal Charge = [# valence electrons on neutral atom] – [(# lone electron pairs) + (½ # bonding electrons)] What I don't understand is that yes the best formal charge should be the 0 (zero) but there are times in which the oct...
by Rogelio Bazan 1D
Sun May 13, 2018 10:18 pm
Forum: Resonance Structures
Topic: Resonance Structure Problems
Replies: 3
Views: 146

Resonance Structure Problems

Whenever we are asked for a resonance structure of a compound, do we have to do all different ways that the compound can be given or will one be sufficient? or is this just a matter of how the question is asked? Like for example if I am asked to give all resonance structures of -blank- vs. give a re...
by Rogelio Bazan 1D
Mon May 07, 2018 12:35 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: spd orbitals and electron config.
Replies: 3
Views: 170

spd orbitals and electron config.

To my understanding, Dr. Lavelle is okay with us using abbreviated electron configurations? but if we have an element whose electron configuration equals that of just another element do we simply leave it as [Ar] or would we have the use the previous element one row above and write the electron conf...
by Rogelio Bazan 1D
Mon May 07, 2018 12:30 am
Forum: Photoelectric Effect
Topic: Photoelectric Problems
Replies: 4
Views: 274

Photoelectric Problems

Is the photoelectric effect just conceptual or is there actual computation for these equations? Do we just need to understand the graphs that depict the photoelectric effect and how this was revolutionary as a photon behaved as both a particle and a wave? Thank you-Roger.
by Rogelio Bazan 1D
Mon May 07, 2018 12:27 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenberg Equation
Replies: 2
Views: 139

Heisenberg Equation

This is just a clarifying question, I don't recall this being on our 2nd quiz will Heisenberg show up on the midterm? If so can someone help and give me an example of a Heisenberg equation I still get confused at times with Heisenberg. Thank you-Roger.
by Rogelio Bazan 1D
Mon Apr 16, 2018 10:25 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect on different material? [ENDORSED]
Replies: 2
Views: 92

Photoelectric Effect on different material? [ENDORSED]

This is more of a conceptual question, but can the photoelectric effect be demonstrated upon any other material besides a metal like I don't know plastic maybe? or does the photoelectric effect only apply to metals? and if it only applies to metals then why?

Thank you,
Roger Bazan
by Rogelio Bazan 1D
Sun Apr 15, 2018 6:39 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical and Molecular the same [ENDORSED]
Replies: 3
Views: 190

Re: Empirical and Molecular the same [ENDORSED]

If by visual representation you mean Lewis structures? Then I would assume yes because if the structure is already at the lowest possible ratio then that would be the empirical formula. For your example, CH70 that cannot be simplified further, therefore, it would be the empirical formula as well but...
by Rogelio Bazan 1D
Sun Apr 15, 2018 6:20 pm
Forum: Properties of Light
Topic: Light is a wave and a particle?
Replies: 5
Views: 178

Light is a wave and a particle?

Dr. Lavelle in lecture began to explain in class about the classical behavior of a light wave, but what got me confused was toward the end of the lecture we began to talk about light as if it was a particle and not a wave. Why is this? Does it have anything to do with what we discussed, the Photoele...
by Rogelio Bazan 1D
Sun Apr 15, 2018 6:15 pm
Forum: *Black Body Radiation
Topic: What is Significant about Black Body Radiation? [ENDORSED]
Replies: 4
Views: 563

What is Significant about Black Body Radiation? [ENDORSED]

I recall Dr. Lavelle going over Black Body Radiation briefly in lecture and just out of curiosity I wanted to know what Black Bodies are and how do they apply to the development of science? What is so significant about Black Body Radiation?

Thank you,
Roger Bazan
by Rogelio Bazan 1D
Sun Apr 15, 2018 6:12 pm
Forum: Properties of Light
Topic: How do I use Planck's constant? [ENDORSED]
Replies: 4
Views: 176

How do I use Planck's constant? [ENDORSED]

I am reviewing the photoelectric effect and the behavior of light is described as photons but I am unsure where to use Planck's constant in an equation all I know is that Planck's constant is 6.63x10^-34 J*sec
Anyone mind telling me where to go from here I am just feeling confused, Thank you.
by Rogelio Bazan 1D
Sun Apr 15, 2018 5:58 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Which mass of oxygen should be used? [ENDORSED]
Replies: 23
Views: 958

Re: Which mass of oxygen should be used? [ENDORSED]

I just use 15.999 as I believe it would give a more accurate answer and at the end of all my work I use Sig. Figs or round if the question asks me too.

Best,
Roger Bazan
by Rogelio Bazan 1D
Sun Apr 15, 2018 5:55 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Atomic weight vs molecular weight
Replies: 4
Views: 268

Re: Atomic weight vs molecular weight

Molecular Mass to my understanding is the entire weight of a compound together, for example, a single water molecule is H20 in which Hydrogen has an atomic weight of 1.008 while Oxygen has an atomic weight of 15.999. You have H2O so you grab the value of Hydrogen 1.008 and multiply it by 2; 1.008*2 ...

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